ET HUNTING Observed POST to xsph .ru Domain

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.host;
content:".xsph.ru"; endswith; fast_pattern;
http.header_names;
content:!"Referer";
Raw source ET HUNTING Observed POST to xsph .ru Domain · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET HUNTING Observed POST to xsph .ru Domain";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.host;
    content:".xsph.ru"; endswith; fast_pattern;
    http.header_names;
    content:!"Referer";
    classtype:bad-unknown;
    sid:2032531; rev:1;
    metadata:affected_product Any, attack_target Client_Endpoint, created_at 2021_04_08, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2021_04_08;
)

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